The paper describing the first detection of gravitational waves from LIGO did estimate the distance d to the source. It was around 1.3 billion light years.

They estimated the distance by the "luminosity", ie how much distortion of space you would expect from merging black holes, vs how much movement was detected in theLIGO mirrors on Earth.

They also estimated the degree of time dilation between the source and Earth, at z=0.09; this is a more flexible model than Doppler shift when high relative velocities are involved, such as in this case. They estimated this from the the orbital period as seen on Earth vs the orbital period expected for these masses.

Quote from: marzosia2

During signal is going to sensor, sensor is changing position too

The whole detected signal lasted less than 10ms, during which time the sensor did not change position very much (not when compared to the black holes, which were orbiting at somewhere around half of the speed of light, just before they merged).

However, there was a second sensor on the other side of the USA which also registered the same pulse.

By recording the same pulse in two locations (or preferably 3), you can tell much more about the speed of the wave and the direction of its source.

I'm sorry Mr Moderator That I showing My picture I can not speak about physics without drawings ! on My blog I asking About money people who like my drawings

TO CREATE PHYSICS YOU MUST EAT ! PEOPLE WHO SIT INSIDE UNIVERSITET ALSO MUST EAT !

You not like please not look on my drawing but people schould have Own opinion about poblem special if we speak about Young students !

TRUE ?

We have Doppler = We are moving We not have Doppler = We are not moving

We no need speak about Mistake during TEST ( many instruments are able make different mistake )We are able speak here About Mathematica Queen ! Mathematica is Queen !

Fact A - We have Zero on Michelson Morley table Fact B - we are not moving and not exist any rotation

If A TRUE ===> B TRUE

FACT C We measured many times ZERO during Michelson Morley FACT D We have zero ( because nobody in past measuresd Doppler ) FACT E We have Zero because we trust that Mr Einstein is more Inteligent than Marosz

C TRUE D FALSE E .... please use mathematica ( Marosz is better if we speak about drawings I never studied in past math, physics I'm machine engineer but I love TRUE )

The problem with your posts is not the pictures but that there are too many of them. The message you are trying to get across and the questions you are trying to ask are lost in the confusion.Try asking one question rather than many all together.

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and the misguided shall lead the gullible, the feebleminded have inherited the earth.

They also estimated the degree of time dilation between the source and Earth, at z=0.09; this is a more flexible model than Doppler shift when high relative velocities are involved, such as in this case.

more flexible model than Doppler ??

ok I will ask Your very precission DO YOU HAVE ANY DOCUMENTS ( books ) that confirm Your opinion ?

Low speed = Doppler medium speed = Small Doppler but better not ?

Sorry Mathematic is not " flexible " mathematic is very very precission

In LIGO, they observe reflections of a very stable laser. The mirrors are very reflective - the power of the laser beam between the mirrors is far higher than the source laser beam(!) This is an effect of resonance, which allows us to store energy over time - see ...sorry, you cannot view external links. To see them, please
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Amplitude=3a

If I read the diagram correctly, it suggests that a signal transmitted with amplitude "a" could be received with amplitude "3a" at a distant point? This implies the creation of energy, which contradicts the normal assumption of conservation of energy.In fact, the distortion measured on Earth (10-21) was far less than the distortion near the source. Other parts of this thread mention Doppler shift (or it's relativistic cousin). This changes the frequency of the wave, not its amplitude (ie horizontal, rather than vertical).

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nobody in past ( I'm sure ) nobody confirmed ABSOLUTE SPEED

Michelson and Morley were trying to measure absolute speed (but even that was relative to the aether). They failed.Einstein started with the assumption that there is no aether and no absolute speed; most physicists today accept this premise. Professional physicists today are not looking for absolute speed, only relative speed.

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right now in physics everything is relative distance d and doppler shift is not relative !

I agree that people are looking for relative distances, because Einstein said there is no absolute zero position.I agree that people are looking for relative velocity, because Einstein said there is no absolute zero velocity.But in your diagram, d is a relative distance.And Doppler shift (or its relativistic cousin) represent a relative velocity.

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ELECTRO MAGNETIC AETER

This died after Einstein published special relativity, about a century ago.

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Inside one Qubic Meter we have infinity no. of waves!

There are some waves which cannot exist within a 1m reflective box, eg waves with a wavelength longer than a meter, or waves with a wavelength which is not a submultiple of the box dimensions. There is also an effective limit to the shortest wavelengths, due to the temperature of the box. (That still leaves a lot of waves!) See ...sorry, you cannot view external links. To see them, please
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is huge problem to tell You this wave it is black hole ?

We know that an empty box does not form a black hole, because the waves don't have enough mass.But there is an ongoing mystery here about vacuum energy - covered in the above URL on the Casimir effect.

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Time Dilatation what is this ? TRUE / FALSE ?

Time Dilation has been proved on Earth, for moving objects and for objects in Earth's gravitational field. The GPS system that everyone seems to use today would be useless if it did not take ...sorry, you cannot view external links. To see them, please
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Michelson and Morley were trying to measure absolute speed (but even that was relative to the aether). They failed.Einstein started with the assumption that there is no aether and no absolute speed; most physicists today accept this premise. Professional physicists today are not looking for absolute speed, only relative speed.

Ok I want speak more about

1861 J. C. Maxwell, published his theory of electromagnetic fields and radiation, which shows that light has momentum and thus can exert pressure on objects.1901 P. N. Lebedev EXPERIMENTAL EXAMINATION OF LIGHT PRESSURE

I copied below paragraph from book / pdf in web I marked important paragraph Galilean relativity ?*********************************************************Imagine a person inside a ship which is sailing on a perfectly smooth lake at constant speed. This passeneger is in the ship's windowless hull and, despite it being a fine day, is engaged in doing mechanical experiments (such as studying the behavior of pendula and the trajectories of falling bodies). A simple question one can ask of this researcher is whether she can determine that the ship is moving (with respect to the lake shore) without going on deck or looking out a porthole.Since the ship is moving at constant speed and direction she will not feel the motion of the ship. This is the same situation as when flying on a plane: one cannot tell, without looking out one of the windows, that the plane is moving once it reaches cruising altitutde (at which point the plane is flying at constant speed and direction). Still one might wonder whether the experiments being done in the ship's hull will give some indication of the its motion. Based on his experiments Galileo concluded that this is in fact impossible: all mechanical experiments done inside a ship moving at constant speed in a constant direction would give precisely the same results as similar experiments done on shore.The conclusion is that one observer in a house by the shore and another in the ship will not be able to determine that the ship is moving by comparing the results of experiments done inside the house and ship. In order to determine motion these observers must look at each other. It is important important to note that this is true only if the ship is sailing at constant speed and direction, should it speed up, slow down or turn the researcher inside can tell that the ship is moving. For example, if the ship turns you can see all things hanging from the roof (such as a lamp) tilting with respect to the floorGeneralizing these observations Galileo postulated his relativity hypothesis:any two observers moving at constant speed and direction with respect to one another will obtain the same results for all mechanical experiments (it is understood that the apparatuses they use for these experiments move with them).In pursuing these ideas Galileo used the scientific method (Sec. 1.2.1): he derived consequences of this hypothesis and determined whether they agree with the predictions.This idea has a very important consequence: velocity is not absolute. This means that velocity can only be measured in reference to some object(s), and that the result of this measurment changes if we decide to measure the velocity with respect to a diferent refernce point(s). Imagine an observer traveling inside a windowless spaceship moving away from the sun at constant velocity. Galileo asserted that there are no mechanical experiments that can be made inside the rocket that will tell the occupants that the rocket is moving . The question ``are we moving'' has no meaning unless we specify a reference frame (``are we moving with respect to that star'' is meaningful). This fact, formulated in the 1600's remains very true today and is one of the cornerstones of Einstein's theories of relativity. ***************************************************************

WE HAVE TWO SIMILAR AIRPLANES A/B INSIDE airplanes we have two the same bulb and camera ?

right now in physics everything is relative distance d and doppler shift is not relative !

I agree that people are looking for relative distances, because Einstein said there is no absolute zero position.I agree that people are looking for relative velocity, because Einstein said there is no absolute zero velocity.But in your diagram, d is a relative distance.And Doppler shift (or its relativistic cousin) represent a relative velocity.

Respect to what we registering DOPPLER ?

IF EARTH WILL ABSLOUTE STOP ( ZERO OWN ROTATION ) YOU WILL SEE DOPPLER ? OR NOT ? !

IF EARTH OWN ROTATION 10x more faster ( HOW BIG DOPPLER WILL BE ) more biger compare to 1x Earth own rotation ?

WHAT IS THE REASON THAT WE ARE ABLE MEASURE DOPPLER ? cw or ccw it will be red or blue DO YOU UNDERSTAND BELOW DRAWING MECHANISM ?

We already knew light didn't need aetherYou haven't shown an aether existsYou haven't shown any of the other things you mention.Not only are your pictures indecipherable by persons of any age, this is turning into a new theory.

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and the misguided shall lead the gullible, the feebleminded have inherited the earth.